Quick summary can be found on apple communities here. I read up on various workarounds, my setup is dual monitor using a Kensington dual monitor dock. So I was being frustrated by random reboots when finished work and leaving laptop open. I have two screens and a Kensington Dock. Kensington SD4700P Dual Video Dock The… Continue reading Catalina 10.15.4 kernel panic on laptop, workaround working for me. Fingers crossed. WindowServer mystery.